Cotta SN1657 High-Speed Transmission
Model SN1657 is a high speed coaxial transmission designed for test stand use for aircraft constant speed drives and generators. Output pads for the constant speed drives and generators are located on opposite sides of the transmission. Generators and CSD’s for the 747, L1011 and the DC10 can be tested. All generators can be tested without the CSD by use of lock up adapters.
CAPACITY: 450HP at 5000 RPM output
OVERLOAD CAPABILITY: 200% over entire range for short duration.
MAXIMUM RPM HIGH SPEED SHAFT: 15,000 RPM
RATIO, OVERSPEED: 5.208, 5.655, 5.909, 6.084, 6.416, 7.768, 7.82
INPUT SHAFT: 3.250” diameter with 3/4 x 3/8 keyway.
DIRECTION OF ROTATION: Either direction. Output rotation is the same as input rotation.
LUBRICATION: Pressure lubricated. Oil sump is in transmission case.
COOLING: Water to oil heat exchanger.
ACCESSORIES: Temperature/pressure switch. Switch activates when oil temperature exceeds safe limit or when pressure drops below minimum.
WEIGHT: Approx. 1100 lbs.